<?php
//图片地址处理
function Getpics($body)
{
    global $weburl;
//$body = strtolower($body);
    $img_array = array();
    preg_match_all("/(src|SRC)=[\"|'| ]{0,}((http|HTTP):\/\/(.*)\.(gif|jpg|GIF|JPG|png))/isU",$body,$img_array);
    $img_array = array_unique($img_array[2]);
    foreach($img_array as $key=>$value)
    {
        $url = $value;
        $fileurl = "/pic.php?s=".base64_encode($url);
        $body = str_replace($url,$fileurl,$body);
    }
    return $body;
}